Building-block mold.



PATENTED OCT. 29, 1907.

0. J. T. GORDES. BUILDING BLOCK MOLD.

APPLICATION FILED MAY 11, 1907.

3 SHEETSSHEET 2.

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0. J. T. 001mm.

BUILDING BLOCK MOLD.

APPLICATION FILED MAY 11, 1907.

3 SHEETS-SHEET 3.

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which the following is a full, clear, and exact descrip- CHARLES J. T.CORDES, OF

WALDWICK, NEW JERSEY.

BUILDING-BLOCK MOLD.

Specification of Letters Patent.

Patented Oct. 29, 1907.

Application filed May 11, 1907- Serial NO. 3731027- To all whom it mayconcern:

Be it known that I, CHARLES .l. T. GoRnEs, a citizen of the UnitedStates, and a resident of Waldwick, in the county of Bergen and State ofNew Jersey, have invented a new and Improved Building-Block Mold, of

tion..

This invention relates to molds or molding machines for forming buildingblocks of concrete or similar material.

The object of the invention is to produce a machine of this class whichis simple in construction and which is intended to mold divided buildingblocks.

A machine constructed according to this invention may be readilyoperated by one man.

The invention consists in the construction and combination of parts tobe more fully described hereinafter and particularly set forth in theclaims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which simi lar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of a molding machine constructed accordingto my invention; Fig. 2 is a ver tical cross section through thismachine, taken on the line 2 2 of Fig. 1; Fig. 3 is a vertical sectionon the line 33 of Fig. 1; Fig. 4 is a perspective of a block formed inthe machine, a portion of the block being broken away; Fig. 5 is alongitudinal section through a portion of the mold, certain parts beingbroken away and shown in elevation; and Fig. 6 is a plan of the machine.

Referring more particularly to the parts, 1 represents the frame of themachine, which comprises standards 2 supporting oppositely projectinghorizontal guides 3. The outer portions of the guides are supported fromthe standards 2 by diagonals or braces 4, as indicated. On the middleportion of the frame between the standards 2 a removable pallet 5 isplaced, resting upon a suitable bottom 6. To the rear edge of thisbottom 6 the back wall 7 is attached, and to the forward edge of thebottom 6 the forward wall 9 is attached by a hinge connection 10. Nearthe middle point of the back wall 7 a yoke 11 is attached pivotally.This yoke comprises arms 12 disposed at the end of the mold, and thesearms are connected at their free ends by a bar 13. It should beunderstood that in forming the mold for the block, the walls 7 and 9 areset in an upright position and the yoke is then forced down over themold, as indicated in Fig. 2. This yoke affords means for bringing thewalls 7 and 9 into their proper position, and in order to effect this,the outer side of the wall 9 is provided with a cleat 14 having aninclined upper edge 15 down which the bar 13 slides when coming into theposition shown in Fig. ,2. 1

Movably mounted on the guides 3 I provide slides l 16 and 17; the slide16 is formed with a rigid end wall 18, and the slide 17 is similarlyprovided with a rigid end wall 19. These end walls 18 and 19 areprovided on their outer sides with cleats 20, presenting inclined upperedges 21 for a purpose which will appear more fully hereinafter.

On the inner face of the end wall 18 I provide a core print 22, and onthe inner face of the end wall 19 I provide a similar core print 23. Bymeans of a lever 24 the end walls 18 and 19 may be withdrawn oradvanced; this lever is mounted rigidly upon a rock shaft 25 at theright of the machine. This rock shaft has an upwardly inclined arm 26which is attached by means of a link 27 to the slide 17. In addition tothis, the rock shaft 25 has a rigid downwardly extending arm 28 to whichis pivotally attached a long link 29 which extends to the opposite endof the machine and forms a pivotal connection with a downwardlyprojecting post 30 car ried by the slide 16. By moving the lever 24toward the position in which it is indicated in dotted lines in Fig. 1,that is, toward the right, the arm 26 is moved toward the right, whichdraws the end wall 19 toward the right. The arm 28 moves toward theleft, which draws the end wall 18 toward the left.

The pallet 5 is provided with an opening 31, and a similar registeringopening is formed in the bottom 6. Through these openings a main coreprint 32 is adapted to slide. The lower portion of this core print isattached to a slide 33 mounted in vertically disposed guideways 34arranged between the uprights 2, as indicated in Fig. 1. The lever 24also affords means for operating this slide and the core print 32simultaneously with the slides 16 and 17. For this purpose I provide anauxiliary rock shaft 35 which is mounted in the uprights 2 at the rightof the machine. To this rock shaft 35 an arm 36 is rigidly attached,which is connected by a link 37 with the end of the arm 28. The rockshaft 35 carries, also, a rigidarm 38, the end whereof is connectedpivotally by a link 39 with the slide 33. When the lever 24 is movedtoward the right, as indicated in the dotted lines, the rock shaft 35 isrotated toward the left. In this way the arm 38 moves downwardly andcauses the link 39 to withdraw the core print 32 through the bottom ofthe mold.

Between the guides 34 near their lower ends, across head 40 is placed,the upper face whereof is provided with a buffer 41 against which thelower end of the slide 33 strikes at the end of its downward movement.

As indicated most clearly in Fig. 6, the core prints 22 and 23 tapertoward their outer ends; thatis, the ends remote from the walls to whichthey are attached. The core print 32 has the form of an elongateddiamond 'having flat ends, and these ends form mortise joints 42 withthe core prints 22 and 23 as indicated. Near the middle points of theforward edges of the core prints 22 and 23, notches 43 are formed.

In preparing the mold to receive the material which forms the block,before the side and the end walls of the mold are brought into position,I place in the notches 43, anchors or anchor bars 44; one of theseanchor bars is clearly illustrated in Fig. 4. They consist of a barhaving cross heads 45. "hese anchors are held in the position shown inFig. 4 that is, with the cross heads 45 disposed in a vertical plane.Attention is called to the fact that the notches 43 are formed entirelyin the edges of the end core prints, that is, the anchors do not projectacross the edges of the main core prints. On account of this arrangementthe anchors do not obstruct the up or down movement of the main coreprint.

The corners of the mold are preferably formed with mortised joints 46,as indicated in Fig. 6, where the end walls engage the side walls. Thecleats 20 on the outer faces of the end walls, operate like the cleat 14on the side wall. These cleats are engaged by the side bars 12 of theyoke when it is forced down into position. These side bars slide down onthe inclined edges of the cleats so as to clamp the end walls inposition. When the walls have all been brought into their properposition and locked there by the yoke, the anchors 44 having been placedin the core prints, the interior of the mold is filled with a plasticmaterial 47 such as c011- crete, Which is adapted to harden upon beingbaked or dried. As soon as the block has been molded in this way, theyoke 11 is forced upwardly so as to release the front and rear walls ofthe-mold, whereupon they swing outwardly and downwardly upon their hingeconnections. The lever 24 is then moved toward the right; in doing so,the end walls 18 and 19 are withdrawn and the main core print 32 iswithdrawn downwardly through the bottom of the mold. The pallet 5 uponwhich the molded block rests, is then removed to a place where thedrying or baking operation takes place. In this way I am enabled to molda block 48 formed in two sections 49 and 50 as indicated in Fig. 4,

the said sections being separated by an opening or open space 51 acrosswhich the anchors 44 extend to connect the sections rigidly together.Building blocks in this form are very useful for building purposes.

While Ihave represented the mold as constructed in such a way as toenable only two anchors to be formed in the finished blocks, it shouldbe understood that if desired, two or more of the notches 43 may beprovided at the meeting points of the core prints, so that the sectionsmay be connected by two anchors at each end, if desired, instead of one.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent:

1. In a molding machine, in combination, a frame, a fixed side wall, asecond side wall hinged at the lower edge of said frame, guides formedon said frame between said side walls, slides moving on said guides andhaving end walls adapted to come into position to form a mold with saidside walls, a lever, mechanism connecting said lever with said slidesfor advancing or withdrawing the same, core prints carried by the innerfaces of said end walls, and a yoke affording means for holding all ofsaid walls in position.

:2. In a molding machine, in combination, a frame, op positely disposedguides formed thereupon, slides mounted on said guides and having endwalls, core prints on the inner faces thereof, a main core print, meansfor guiding the same upwardly into the space between said end walls, alever, mechanism connecting said lever with said main core print andsaid slides for simultaneously advancing or withdrawing the same, afixed side wall, a movable side wall, and a yoke adapted to hold all ofsaid walls in post tion.

In a molding machine, in combination, a frame haw ing oppositelydisposed guides, slides mounted movably on said guides and having endwalls with core prints formed on the inner faces thereof, a main coreprint, means for guiding the same to advance into position between saidfirst core prints. said core prints having means at the meeting edgesthereof for supporting anchors in the in terior of the mold, a fixedside wall, a movable side wall hinged to said frame, a lever,mechanisnvconnecting said lever with said slides and said main coreprint for advano ing or withdrawing the same simultaneously, and a yokeadapted to hold said walls in position.

4. In a molding machine, in combination, a frame having oppositelydisposed guides slides mounted on said guides and having end walls withcore prints formed on the inner sides thereof, a fixed wall, a side wallhinged between said end walls, a pallet supported on said frame betweenall of said walls, said pallet having an opening therethrough, a maincore print, means for guiding the same to slide through said openinginto the interior of the mold, means for advancing said slides and saidmain core print, said core prints being adapted to meet at their edgesto form a division through the mold, the meeting edges of said coreprints having notches adapted to support anchors projecting into thedivisions of said mold.

5. A molding machine having oppositely disposed end walls mounted toslide inwardly to form the mold, core prints carried on the inner facesof said walls, a bottom core-print sliding up through the bottom of themold and adapted to bridge the space between said first core-prints todivide the mold, the meeting edges of said core-prints having notchesadapted to support bonding anchors between the divisions of the mold.

(3. A molding machine having oppositely disposed Walls adapted to slideinwardly to form the mold, core-prints on the inner faces of said molds,a main core-print adaptedto slide into the mold from beneath, said coreprints having notched edges, which meet together to form a continuouscore-print within the mold, said first core-prints having notches in theedges thereof adapted to support bonding anchors beyond the edge of saidmain core-print whereby said anchors permit the upward sliding movementof said main core-print.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES .T. T. CORDES.

Witnesses F. D. AMMEN, EVERARD B. MAnsnALL.

